Valve-spring lifter



Jul 1 1924. 1,499,843

' H. A. R. PETERSON VALVE SPRI NG LIFTER Filed Sept. 25, 1922 Patented July 1, 1924.

HERBERT A. R. PETERSON, or MAnKA'ro, minnEsorn; f-

VALVE-SPRING LIFTER.

Application filed September 25, 1922.1 Seria1fNo. 590,484.

To all whom it may con-0cm:

Be it knownthat I, HERBERT A; R. PETER- soN, a citizen of the United States, residing at Mankato, in'the county of Blue Earth 71 and K 101 of GMG trucks and so con structed and mounted for use that ample room is provided for the user to insert his hand beneath the valve to be removed and remove the valvelook keys without danger of the keys dropping into inaccessible places.

In GMC truck's, the "valve lifters are carried in groups of four in removable brackets, and each of these assemblies can be removed as a single unit without removing the valve spring retainers and are fastened in place by eight cap screws. It takes only a few moments to remove these units by taking out the screws" and the valve spring lifter constituting" this invention 'is constructedso as to be attached to the engine block'atany one of these eight places and is secured by bolting to the motorwhereby the lifter is made rigid and cannot slip out of:

place.

The ordinary valve spring lifter employed in connection with trucks of this type is so constructed as to be used without removing the valve tappets which are needed as a perch to obtain leverage on the lifter and thus no space is provided for the insertion of the 'users hand to remove and catch the valve locking keys.

With the foregoingand other objects in view which will appear as the' description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

In the accompanying drawings Figure 1 represents a side elevation of a valve lifter constructed in accordance with this invention shown' applied, with the spring compressed'in 1 full lines and the" parts of the'lifter in the position assumed during said compression, the dotted line position-sho'wingthe spring beforejcompres sion'with the'lifter' ready "for usew @Fig; 2 is a perspective view of;- he lifter shown in position readyffor use, the valve spring'and valve in 'connection'with which it' is used, being lH WIijin dotted lines,

In, the embodiment illustrated, the lifter constituting this invention comprises an ini verted 'L-shaped bracket 1, the arm 2 of which is designed to be positioned upright against the engine wall and is apertured as shown at 3 for the passage of bolts which are designed tofcon'nect this bracket through the bolt openings which are employed forconnecting the valve tappet'assembly, it be ing' understood that the assembly is first removed andithat the lifter is fastened first undertone valve andthen under another andso on.

The bracket aim-4 which ex ends on wardlyffrorn' the engine in horizontal position when'thelifteris applied is apertured for the passage of 'a bolt 5" equip'ped'with a wing nu't 6 which' 'adjustably mounts on the bracket the body 7' of the "lifter: v

The lifter body 7'} is constructed in thei formjof a metal'ba'ror strip, slotted longitudinally as shown; at 8 for the passage of the connecting bolt 5, whereby this body may 1 be moved toward and awayfrom the engine connectionwith which the lifter is' used, The innerend 9.]of the-body 7 I extends outwardly and "upwardly t at an oblique angle and is apertured "forthe-pas sage oflano'perating screw 18' presently-to be described. Theother'end "ofthebod'y 7 {has an upstanding right angularly dis posed arrri "10 provided near 5 itsterr nin al; with a transversely extending slot-.'11 1-, 1:re-

ceive'the hookede'nd 13of'the-lifteLfi m 12. This lifter arm 1'2,has an OESeQPQml Qn 1 2 :throughwh-ich the operating; screw; 18

passes, said arm being slotted toprovide for such passage as shown at 12".

The inner spring engaging end of the arm 12 is bifurcated and between the furcations 14 thereof is pivotally mounted an annular spring engaging member 15, the pivots 16 on which said member 15 is mounted being journaled-in the furcations 14. This spring engaging member 15 is equipped with up- The; keys-JKare-.madeimtWO parts as is,

ordinary.- with;the;.type;ofkey. used in this form, of. engine, and are, Slightly tapered,

' beinglock din a-groovejn thellower end. of;

valve; stem, 8. by means of"- the. cap G.

The actuating-screw. 1,8. which controls the movement of: the litter; arm or, lever; 12

risee uipp edl at its outer. end with a cross. bar-.219; torafi rda hand grip for opera ing the screw. Thiszscrcw l8fl-passesobliquelv through; the; offset slotted portion 12* of their. lever -121and.thr011ghthel short oblique arm;9g (lithe-lifter body 7, being equipped outside-said; arm with a 100k nut 20. A wing'nut, 2 1; is mounted on the screw 10 belowand adjacent the. lever 12 and is equipped with. diametrically opposite prongs V 22 which are designed to engagegrooves in a member 23,; carried, by screw 12.- These prongs-r22 act as centers so that when the screw.- 1;8;is,turned, they engage the grooves iurthe, member 23, and. cause the lever to- ;raise or lower according to the direction ini whichuthescrew-sis. turned.

' 'Whenthis lifterg-isapplied, as, shown in Figs}: -1 and 2, the screw 18 is: turned to raise; the. front, end of the lever 12, into the full .liue.:positi.on,-.shown in Fig. 1, thereby compress-ing;and; raising 7 spring S to ex.- pose: the locki g keys; which may e moved-and; caught. inflthe hand. f the user, am leiroom being provided for the insertion off-the usefis hand for this; purpose- Eheva'lve lifters-[of GMCI trucks are carried in groupsof. four, in removable brackets and:: eachofthese assemblies is; removable asia singleiunitwithout removin thevalve spring; "retainers and a they are 7 placeryciglltcap, screws,

astened in These units are removed-Lima few minutes: by taking out the; capqscrews and the valve spring lifter constituting: this'invention may be attached llO-w the engine blockgat any one of these laces andsecured by bolting it-to the motor.

hen; so- 1'mounted it will be obvious that, the ringeshaped-'-member 15. may he. slipped messes up onthe valve stem 5- as: shown in Figs. 1 and 2.

This mounting of the lifter on the motor after the-removal of the valve tap ets avoids all danger of the locking keys dropping into the bottom of the crank case where they are inaccessible and to remove them requires several hours work. Of course if any other valve keys are athand they may be substituted for those which fall into the crank case, but oftentimes such additional keys arenot provided and hence long delays occur when the truck is to be partially disassembled to reach the crank case, or other keys ordjered' from a distributing point.

The. ifter constituti g this in e t on m y be. asily perated ylthe. dina y truc d iver by. imply r moving the v v pp in. the man er abov es rib nd 'substituting therefor-this lifter,

Ioclaimz- 1. A valvespringlifter of the class described cemprising a body having an attaching bracket adjustably connected therewith and provided with means for securing it to a motor, a lifter arm fulcrumed at one end on said body, an operating screw passing obliquely through said arm and said body and connectedto raise 'or lower the arm, and a spring engaging'saddle pivotally mounted on said arm.

2. A valve spring lifter for GMG trucks comprising a bodyhaving laterally extending arms at its opposite' ends, one of said arms being arranged at an; oblique angle and the other at right angles, an attaching bracket carried-by5aid1b0dy,;a lever having an off-set end fulcrumed in said right angular body arm and having spring engaging means at its other end, an actuating screw passing through the oifset ortion of said lever arm and' through the obdiquely disposed body arm a lock nut for said screw, and cooperating meansoarried by said screw and lever arm whereby the turning of the screw will operateto raise, or lower the arm.

'In testimony thatfI' claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

HERBERT A. R. PETER-SON.

Witnesses MARGUERITE KEQU H, LOUIS 8.0mm. 

